docker image push

内容説明	Upload an image to a registry
利用方法	`docker image push [OPTIONS] NAME[:TAG]`
エイリアス	`docker push`

内容説明

Use docker image push to share your images to the Docker Hub registry or to a self-hosted one.

Refer to the docker image tag reference for more information about valid image and tag names.

Killing the docker image push process, for example by pressing CTRL-c while it is running in a terminal, terminates the push operation.

Progress bars are shown during docker push, which show the uncompressed size. The actual amount of data that's pushed will be compressed before sending, so the uploaded size will not be reflected by the progress bar.

Registry credentials are managed by docker login.

Concurrent uploads

By default the Docker daemon will push five layers of an image at a time. If you are on a low bandwidth connection this may cause timeout issues and you may want to lower this via the --max-concurrent-uploads daemon option. See the daemon documentation for more details.

オプション

オプション	デフォルト	内容説明
`-a, --all-tags`		Push all tags of an image to the repository
`--disable-content-trust`	`true`	Skip image signing
`--platform`		API 1.46 以上 Push a platform-specific manifest as a single-platform image to the registry. Image index won't be pushed, meaning that other manifests, including attestations won't be preserved. 'os[/arch[/variant]]': Explicit platform (eg. linux/amd64)
`-q, --quiet`		Suppress verbose output

利用例

Push a new image to a registry

First save the new image by finding the container ID (using docker container ls) and then committing it to a new image name. Note that only a-z0-9-_. are allowed when naming images:

$ docker container commit c16378f943fe rhel-httpd:latest

Now, push the image to the registry using the image ID. In this example the registry is on host named registry-host and listening on port 5000. To do this, tag the image with the host name or IP address, and the port of the registry:

$ docker image tag rhel-httpd:latest registry-host:5000/myadmin/rhel-httpd:latest

$ docker image push registry-host:5000/myadmin/rhel-httpd:latest

Check that this worked by running:

$ docker image ls

You should see both rhel-httpd and registry-host:5000/myadmin/rhel-httpd listed.

Push all tags of an image (-a, --all-tags)

Use the -a (or --all-tags) option to push all tags of a local image.

The following example creates multiple tags for an image, and pushes all those tags to Docker Hub.

$ docker image tag myimage registry-host:5000/myname/myimage:latest
$ docker image tag myimage registry-host:5000/myname/myimage:v1.0.1
$ docker image tag myimage registry-host:5000/myname/myimage:v1.0
$ docker image tag myimage registry-host:5000/myname/myimage:v1

The image is now tagged under multiple names:

$ docker image ls

REPOSITORY                          TAG        IMAGE ID       CREATED      SIZE
myimage                             latest     6d5fcfe5ff17   2 hours ago  1.22MB
registry-host:5000/myname/myimage   latest     6d5fcfe5ff17   2 hours ago  1.22MB
registry-host:5000/myname/myimage   v1         6d5fcfe5ff17   2 hours ago  1.22MB
registry-host:5000/myname/myimage   v1.0       6d5fcfe5ff17   2 hours ago  1.22MB
registry-host:5000/myname/myimage   v1.0.1     6d5fcfe5ff17   2 hours ago  1.22MB

When pushing with the --all-tags option, all tags of the registry-host:5000/myname/myimage image are pushed:

$ docker image push --all-tags registry-host:5000/myname/myimage

The push refers to repository [registry-host:5000/myname/myimage]
195be5f8be1d: Pushed
latest: digest: sha256:edafc0a0fb057813850d1ba44014914ca02d671ae247107ca70c94db686e7de6 size: 4527
195be5f8be1d: Layer already exists
v1: digest: sha256:edafc0a0fb057813850d1ba44014914ca02d671ae247107ca70c94db686e7de6 size: 4527
195be5f8be1d: Layer already exists
v1.0: digest: sha256:edafc0a0fb057813850d1ba44014914ca02d671ae247107ca70c94db686e7de6 size: 4527
195be5f8be1d: Layer already exists
v1.0.1: digest: sha256:edafc0a0fb057813850d1ba44014914ca02d671ae247107ca70c94db686e7de6 size: 4527